medium6.7Known exploited
CVE-2026-34926
Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-05-21. Federal due date: 2026-06-04.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Impact
Trend Micro Apex One (on-premise) contains a directory traversal vulnerability that could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents on affected installations.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Trendmicro | Apex One | before 14.0.0.17079 before 14.0.20731 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- https://jvn.jp/en/vu/JVNVU90583059/
- https://success.trendmicro.com/en-US/solution/KA-0023430
- https://success.trendmicro.com/ja-JP/solution/KA-0022974
- https://www.jpcert.or.jp/english/at/2026/at260014.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926